Base for an upright vacuum cleaner



FIG. 1 is a top, front and left side perspective view of a base for an upright vacuum cleaner showing my new design;

FIG. 2 is a top, front and right side perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a bottom view thereof.

The portion of the vacuum cleaner shown in broken lines in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a base for an upright vacuum cleaner, as shown and described. 